U.S. August CPI Due Friday, Year-over-Year Rate Expected to Hold Steady at 3.4%
nashnova research
U.S. August CPI lands Friday (Sept 11). Economists expect headline growth steady at 3.4% year-on-year and core CPI easing to 2.4% — this single print is the week's dominant pricing anchor and a key input for the Fed's next move.
Headline CPI: what is gasoline doing to the number?
Headline CPI is forecast at +0.4% month-on-month, up sharply from July's +0.07%. This means → the monthly pace jumped nearly sixfold, driven mainly by rising gasoline prices.
Year-on-year growth is expected flat at 3.4%, matching July. In plain terms = prices are still rising, but the pace is not accelerating — for markets, "no faster" is itself a tolerable outcome.
Core CPI: is housing the biggest wildcard?
Core CPI — prices excluding food and energy — is forecast at +0.2% month-on-month, roughly matching July's +0.22%.
Year-on-year growth is expected to edge down from 2.5% to 2.4%, a 10-basis-point decline. This means → core inflation is still cooling, but only barely.
The biggest wildcard is housing costs. The Case-Shiller index — tracking home prices across major U.S. cities — shows signs of re-acceleration. This reflects the heaviest-weighted component in core CPI potentially slowing the overall cool-down.
What can PPI tell us ahead of time?
August PPI — the Producer Price Index, measuring prices at the factory gate — lands Thursday and will offer a leading signal for CPI.
Economists estimate PPI will imply core PCE — the Fed's preferred inflation gauge — rising +0.3% month-on-month, up from July's +0.2%; the annualized rate moves from 4.2% to 4.6%.
In plain terms = if factory-gate prices are accelerating, consumer prices are unlikely to cool quickly. PPI is the trailer before the main feature.
The ECB hiking the same week — what does that signal?
The European Central Bank announces its rate decision Thursday. Deutsche Bank expects a 25-basis-point hike, lifting the deposit rate to 2.50%.
Deutsche Bank also raised eurozone growth forecasts: 2026 to 0.8% (+0.3 pp) and 2027 to 1.2% (+0.1 pp).
This means → both the Fed and ECB remain in tightening mode. The global rate environment is not loosening any time soon.
Consumer sentiment and what markets are really waiting for?
The University of Michigan's September consumer sentiment preliminary reading is expected to slip from August's 51.7 to 51.0, with the inflation expectations sub-index drawing extra scrutiny.
Last week's jobs report beat expectations. Market attention has already shifted from employment to inflation. Fed officials are not expected to speak publicly this week.
In plain terms = no Fed guidance this week — the CPI print itself becomes the market's sole pricing input. The data will do the talking.
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